BoilerFaultCodesYour boiler has detected that the water pressure is too low to operate safely and has switched itself off to prevent damage.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The boiler shuts off automatically.
What causes this fault?
This fault occurs when the water volume inside your central heating system drops below a safe operating level, often due to a small leak in the pipework or a radiator. It can also happen if your radiators were recently bled without the system being topped up, or if an internal component like the expansion vessel is no longer holding pressure correctly. When the pressure drops too low, the boiler shuts down to prevent the internal heat exchanger from overheating and sustaining permanent damage.
This issue is more common at the start of autumn when homeowners turn their heating back on after a long summer break, often revealing small leaks that developed while the system was idle.
DIY fix possible
Locate the external filling loop (the flexible silver hose) under or near the boiler.Slowly open the one or two taps on the hose until you hear water entering.Watch the pressure gauge and close the taps once the needle reaches between 1 and 1.5 bar.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like Pressure fall below 0.5 BAR — no call-out fees, no surprises.
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Vokera Mynute 10E is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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